public void Initialize(Device device) {
_b = EffectUtils.Load("PpBasic");
E = new Effect(device, _b);
TechCopy = E.GetTechniqueByName("Copy");
TechCopyNoAlpha = E.GetTechniqueByName("CopyNoAlpha");
TechOverlay = E.GetTechniqueByName("Overlay");
TechShadow = E.GetTechniqueByName("Shadow");
TechDepth = E.GetTechniqueByName("Depth");
TechFxaa = E.GetTechniqueByName("Fxaa");
for (var i = 0; i < TechCopy.Description.PassCount && InputSignaturePT == null; i++) {
InputSignaturePT = TechCopy.GetPassByIndex(i).Description.Signature;
}
if (InputSignaturePT == null) throw new System.Exception("input signature (PpBasic, PT, Copy) == null");
LayoutPT = new InputLayout(device, InputSignaturePT, InputLayouts.VerticePT.InputElementsValue);
FxInputMap = E.GetVariableByName("gInputMap").AsResource();
FxOverlayMap = E.GetVariableByName("gOverlayMap").AsResource();
FxDepthMap = E.GetVariableByName("gDepthMap").AsResource();
FxSizeMultipler = E.GetVariableByName("gSizeMultipler").AsScalar();
FxScreenSize = E.GetVariableByName("gScreenSize").AsVector();
}
public static byte[] ToPng(DeviceContextHolder holder, byte[] bytes, bool ignoreAlpha, out Format format) {
Viewport[] viewports = null;
try {
using (var stream = new System.IO.MemoryStream())
using (var effect = new EffectPpBasic())
using (var output = TargetResourceTexture.Create(Format.R8G8B8A8_UNorm))
using (var resource = ShaderResourceView.FromMemory(holder.Device, bytes)) {
var texture = (Texture2D)resource.Resource;
var loaded = texture.Description;
effect.Initialize(holder.Device);
format = loaded.Format;
output.Resize(holder, loaded.Width, loaded.Height);
holder.DeviceContext.ClearRenderTargetView(output.TargetView, Color.Transparent);
holder.DeviceContext.OutputMerger.SetTargets(output.TargetView);
viewports = holder.DeviceContext.Rasterizer.GetViewports();
holder.DeviceContext.Rasterizer.SetViewports(new Viewport(0, 0, loaded.Width, loaded.Height, 0.0f, 1.0f));
holder.DeviceContext.OutputMerger.BlendState = null;
holder.QuadBuffers.Prepare(holder.DeviceContext, effect.LayoutPT);
effect.FxInputMap.SetResource(resource);
holder.PrepareQuad(effect.LayoutPT);
if (ignoreAlpha) {
effect.TechCopyNoAlpha.DrawAllPasses(holder.DeviceContext, 6);
} else {
effect.TechCopy.DrawAllPasses(holder.DeviceContext, 6);
}
Texture2D.ToStream(holder.DeviceContext, output.Texture, ImageFileFormat.Png, stream);
stream.Position = 0;
return stream.GetBuffer();
}
} finally {
if (viewports != null) {
holder.DeviceContext.Rasterizer.SetViewports(viewports);
}
}
}